Bevel-finder for rafter-cutting.



A. WRIGHT.

BEVBL'FINDEB. FOR RAFTEB. CUTTING.

APPMGATION FILED 11111147.1913

Patented ,111119, 1915.

2 SHEETS-SHEET 1.

if M/Kra/ @W6 A. WRIGHT.

BEVEL FINDER POR RAFTER CUTTING.

APPLICATION FILED MARA?, 191s.

1,125,246. Patented Ja11.19,1915.

2 SHEETS-SHEET 2.

THE NOPRIS PETERS co, PHLTOVLI TMO.` WASHINGTON. D c.

ADELBERT WRIGHT, OF ST. LOUIS, MISSOURI.

BEVEIi-FINDER FOR RAFTER-CUITING.

Specification of Letters Patent.

Application led March 17, 1913. Serial No. 754,872.

T0 all 'whom it may concern.'

Be it known that I, ADELBERT WRIGHT, a citizen of the United States, and resident of St. Louis, Missouri, have invented certain new and useful Improvements in Bevel- Finders for Rafter-Cutting, of which the following is a specification containing a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to improvements in bevel finders for rafter cutting, and the object of my invention is to construct a tool having relatively movable blades from which angles of cutting rafters may be found without calculation and only upon a determining of the incline or pitch of the rafter.

With the above purposes in view my invention consists in certain novel features of construction and arrangement of parts as will be hereinafter more fully described, pointed out in the claims and illustrated by the accompanying drawings, in which- Figure 1 is a plan of one of my improved bevel finders; Fig. 2 is a plan of my device with the face plate removed showing a blade for use in connection with hexagonal rafters and the pivot in position for use in connection with hexagonal rafters; Fig. 3 is a view similar to Fig. 2 showing a blade for use in connection with octagonal rafters and the pivot in position for use in connection with common rafters; Fig. 4 is an enlarged transverse sectional elevation taken on the line 4-4 of Fig. 1; Fig. 5 is a transverse sectional elevation taken on the line 5 5 of Fig. 1; Fig. 6 is a longitudinal sectional elevation taken on the line 6-6 of Fig. 1; Figs. 7 and 8 are plans of my improved instrument, Fig. 7 showing the pivot for use in connection with common rafters and Fig. 8 showing the pivot for use in connection with other than common rafters.

Referring by numerals to the accompanying drawings: 9 designates the body of my improved tool which is preferably made of a single piece of metal, whose general shape is a rectangular oblong, having in its upper face a cut away depression 10 forming seats.

11 designates a stop formed on the upper face of the body 9.

12 designates a blade arranged to be seated in the depression 10 so that its upper surface will be flush with the top surface of the body 9.

13 designates a pivot for the blade 12 provided with a non-circular portion 13a in order that the pivot will 'rotate upon a movement of the blade 12.

14 designates an indicator which is se,- cured to the pivot 13 by a yscrew 15 in such manner that when `the pivot isk turned the indicator will turn with it. This indicator 1s preferably located in a circular depression 16 formed in the top or cover plate 17. This cover plate 17 is secured to the body 9 by means of screws 18, preferably arranged one at each end of the device. Surrounding the circular depression 16 are the scales 19 and 20, designated respectively Com., which is an abbreviation for common and C( 77.

21 and 22 designate the two interchangeable blades which I employ for the giving of the side bevel cuts. Each of these blades is perforated adjacent one of its ends in order that it may be pivotally secured over a stud 23 carried by the blade 12. In the blade 12, and in each of the blades 21 and 22, there is formed a diagonal slot such as 24. 25 designates a set screw which is arranged to be inserted through openings formed in the body 9 and cover plate 17 and also through one of the slots 24, so that when the blade 12 is moved the blade either 21 or 22 will be moved with the blade 12.A

26 designates a slot formed in the blade 21, and 27 designates a slot formed through the blade 22. These two slots are arranged at different angles relative to the slots 24, so that the blades will have different relative movements when connected with the blade 12.

It is to be observed that each of theblades 21 and 22 is provided with differently located slots and that the tool body and its cover are each provided with differently located but alining pairs of openings to receive a pin. This makes possible a dual function for each of the blades 21 and 22. When the pin or set screw 25 is placed through either one of the slots 24 in either blade 21 or 22 and the blade 12 moved to the desired inclination to produce a plumb cut, the blade 21 or 22 will be accurately positioned to produce a corresponding side Patented J an. 19, 1915.-

bevel cut. When it is desired to cut rafters for a hexagonal roof the blade 21 is pivoted to the blade 12 and the set screw 25 is liXed through the slot 26 so that, when the blade 12 is moved to the desired angle of plumb cut, the blade 21 will be automatically and accurately moved to the desired angle for the side bevel cuts. l/Vhen cutting rafters for an octagonal roof the blade 22 is employed with the set screw 25 through the slot 27 so that, when the blade 12 is moved to the proper angle for the plumb cut, the blade 22 will be automatically and accurately moved to the proper angle for the side bevel cuts.

claim:

l. ln a device of the class described, a two-piece body portion, a blade pivotedbetween the pieces of the body portion, a sec* ond blade pivotally secured to the first mentioned blade and provided with a pair of slots, a 'ulcrurn connected with said body portion and arranged to extend through either one of said slots, and a stop formed integral with said body portion for limiting the movements ofy one of said blades.

2. In a device of the class described, a two-piece body portion, a blade pivoted between the pieces of the body portion, a second blade pivotally secured to the first mentioned blade and provided with a pair of slots, a fulcrum connected with said body portion and arranged to extend through either one of said slots, a stop formed integral with said body portion for limiting the movements of one of said blades, there being distinct sets of arcually arranged indicia on said body portion, and a hand arranged to move with said lirst mentioned blade, substantially as shown and for the purposes r stated.

In testimony whereof, have signed my name to this specification, in presence of two subscribing witnesses.

ADELBERT WRGHT.

Witnesses:

JONES H. PARKER, R. Gr. ORWIG.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents,

Washington, D. C. 

